Question

Tames is six years older

than Peter and the average
of their ages is twice peter age.
How old are they
​

Answer 1

3 and 9

Explanation:

let Peter's age be x then James is x + 6

The average of their ages is twice Peter's age, that is

`(x+x+6)/(2)` = 2x

`(2x+6)/(2)` = 2x

x + 3 = 2x ( subtract x from both sides )

3 = x

Then Peter is 3 years old and James is x + 6 = 3 + 6 = 9 years old